Oil cooler



y 1950 R. A. RICHTER 9 5 OIL COOLER Filed Oct. 25, 1945 014750 Fl g. 7

ocpooo Robert A. Richter awe/whom- Patented July i4, 1950 on; COOKER" RobertARitzhter, United Seaway. Application October 25, ,1945',,$erial No. 24.627.

(Granted under the act of Marci. 3,1883, as.

Y S m-aims.

Other. objects andadvantages of the inventionwillbecome. apparent :as the description proceeds and-:is.-.taken in iconnectionwith the accompanying-drawings .wherein like characters of reference designate corresponding parts. throughout the severaliyiews,andwherein:

Fig-.- 1 is anendielevational .view. of an-oil cooler and illustratingthe .nesting. of .the tubes therein.

Fig. 2..is a.,view-. taken on line.2.-2 of Fig. 1 looking-inathe direction of .the arrows, .and showing: flanges .with openings andapertures.

Fig..3:ris.aiviewztaken on linev 3-.-3' of Fig. 1 andglookingin the direction. of the arrows.

Fig=.-4.:is aitop plan view.of.-a asket..

Fig. .5eis .a transverse, fragmentaryview. taken onsline 5;.5;of F-ig. 1.

Fig. 6..is; an; enlarged end view of tubes and illustrating. the' nesting. ofthe tubes .on the inner peripheraliwalliofia.cooler' housing, the housing being; shown .fragmentarily.

Fig. 7' is asideelevational view of one form of tattubee-end; the end of thetube being shown in detail .inendelevation, the tube being shown fragmentarily- Fig. 8..is.- a side elevational view of 1 another form.-of:a.-.tube,.- the end of the .tube being shown indetail .in .end elevation, thetube bein shown fragmentarily.

Fig.-a.9=;is apartial sectionalviewl of the upper semiecircularlelement andthe thermostatic valve fitting-.connected thereto, taken substantially on the line .9'9 of .Fig. 2.

Referringto .thedrawings, the numeral I0 represents. a casingthat comprises two semi-circular;elementss I I and, the element I I being providedwitha channel. I3, flanges I 4 and apere tures.,l5,.the channel..l3..having.an.outlet I6 in.

that are in communication with the channel I3- The element I 2-.is provided with va .,channe1.t2 I I flan es. 22 and pfirturesjii; thechannelz I ihavamended April 30, 192.8; 370 0. G. 757

ing. an outlet 2min the flanges 22, the'innerperipheral wall- I 2- being provided with resilient strips 25. 1 Centrallyof the element I2 there is provided an outlet port26; an inlet port 21- and azdecongealin tube 2-8: Interposed' between the elements ...I I. and I2 as shown in Figs. 1 and 4 are gaskets 255 having an elongated opening 30 and apertures 31, the openings 30 being in alignment with .the outlets I5 and 24, the apertures dhbeing in alignment with the apertures I5 and 23:; As shown in Fig. 1 the elements II and I2 are fixedly secured by bolts 32- and-nuts 33:

Withinthecasing Iii-there is mounted a plurality of tubes 3&- and IiE- illustrated in Fig. 1, the tubes.' 34 having an end portion sfi that-is of hexangular configuration shown in end-elevationzin. Fig. Tandbeing coveredwith a resilient rubber substance 3'1, forming acushioning means. In. Fig. 8:the tubes 35 have an end portion 38 thatis A of substantially quadrilateralconfigurationasshowninend elevation inFig. 8 and being. covered with .a resilient rubber substance 3 9, forming a cushioning means, the. wall being ofv arcuate configuration to conform to. the arc of the inner peripheral walls ofelements II and I2. The ends 36 and 38 of the tubes 34 and 35 being larger than the diameter ofthetubes provide a uniform spacin of the tubes in the casing IIl.

T n-the assembling ofvthe tubes in the housing as shown in Fig, 6 a tube 35,:is placed in the housing It the wall 40. engagin the resilient strips I7. Next one of the tubes sd is placed in the housing It, the wall M of the end portion 36 engaging thev wall. 62 0f the end portion 38. On the opposite side. of the end portion 36 is placed another. tube 35 the end wall 43 engaging the wall Aid of the end portion 38, the arcuate portions :25 engaging the. resilient strip I'I. Tubes are inserted into the casin until the entire inner area of the elements II and I2 are filled, and at this point the. nuts 33 are tightened and the elements brought together. During the tightening of the bolts the ends of the tubes are squeezed together certain portions of some'of the tube ends engaging the resilient strips I! and 25, thus providing leak proof end walls for the cooler. The tubes 3d and 35 in assembled position are in spaced relation and allow oil passing through the channels I3 and 2i into the openings l8, I9 and 20 to pass around the tubes-34 and 35 to the outlet port 28. From the description of the arrangement of parts it can be seen thatv if one of the tubes 34 01 35.should go.bad,.it is a. simple matter to .replacethe tubeby'simplyrlccs connected by a funnel shaped passage 46 through the casing to the port 4'! controlled by a thermostatic valve 43 which is connected by rectangular passage 49 in fitting '50, to which the outlet 26 is also directly connected, to a discharge conduit from the cooler back to the engine. The thermostatic valve fitting 50 forms no part of the present invention and is disclosed merely to clarify the operation of the present oil cooler.

The hot oil from the engine enters the oil cooler through inlet 21 and thence flows around the channel i3 to and through the openings I8, I9 and 20. If the lubricant within the radiator is congealed to such an extent that the resistance to flow through the radiator between the tubes is greater than the resistance to flow through the decongealing tube 28, the lubricant will take the course of least resistance and flow through the decongealing tube28. Thence the oil will flow through passage 46, port 41, passage 49, and finally to a discharge conduit and back to the engine. The thermostatic valve 48 is normally full open, but starts to close as the radiator becomes warmed-up and the temperature of the oil increases. When outlet port 41 is fully closed by thermostatic valve 48, all hot oil is forced through the radiator (between the tubes) and out through outlet 26, passage ii, and thence back to the enine. Just before the outlet port 41 is fully closed by valve 48, hot oil from the engine enters the discharge conduit back to the engine both from the decongealing tube and from core outlet 26.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any roya1ties thereon or therefor.

What I claim is:

1. A cooler for congealable liquid, comprising: a pair of semi-cylindrical jacket members, one member being provided with an inlet through the outer jacket wall and two outlet passages through the jacket chamber and jacket walls, and the other member being provided with an opening through its inner jacket wall; matching flanges on said members disposed in face to face relation, the flanges having passages therethrough in registry with the jacket chambers and in registry with each other; elastic sealing means interposed between the flanges, said sealing means being provided with passages in registry with the passages in said flanges; a stack of tubes in the space defined by said members, said tubes extending parallel to the axis of said members; individual elastic sleeves on the ends of said tubes, said sleeves having a plurality of working faces on the external periphery thereof arranged 2. The apparatus of claim 1 and a discharge conduit connected to the decongealing tube outlet; and a thermostatic valve in said conduit for controlling said decongealing tube outlet.

3. A cooler for congealable liquid, comprising: intake and discharge conduit means; a pair of semi-cylindrical jacket members, one member being provided with an inlet through the outer jacket wall and two outlet passages through the jacket chamber and jacket walls, said inlet being connected to said intake conduit means, said outlet passages being operatively connected to said discharge conduit means, and the other member being provided with an opening through its inner jacket wall; matching flanges on said members disposed in face to face relation, the flanges having passages therethrough in registry with the jacket chambers and in registry with. each other; elastic sealing means interposed between the fianges, said sealing means being pro-- vided with passages in registry with the passages in said flanges; a stack of tubes in the space defined by said members, said tubes extending par-- allel to the axis of said members; individual elastic sleeves on the ends of said tubes, said sleeves having a plurality of working faces on the external periphery thereof arranged to coact with: working faces on adjacent sleeves or with the adjacent inner periphery of said elements; a decongealing tube connected to one of said outlet passages and extending approximately to said opening in said other member; and means for locking the semi-circular elementsv together, through means of their flanges, operative to form a fiuidtight seal between said working surfaces when compressed.

4. A cooler for congealable liquid, comprising: intake and discharge conduit means; a pair of semi-cylindrical jacket members, one member being provided. with an inlet through the .outer jacket wall and two outlet passages through the jacket chamber and jacket Walls, said inlet being connected to said intake'conduit means, and the other member being provided with an opening through its imier jacket wall; matching flanges on said members disposed in face to face relation, the flanges having. passages therethrough in registry with the jacket chambers and in registry with each other; elastic sealing means interposed between the flanges, said sealing means being provided with passages in registry with the passages in said flanges a stack of tubes in the space defined by said members, said tubes extending parallel to the axis of said members; individual elastic sleeves on the ends'of said tubes, said sleeves having a plurality of working faces on the external periphery thereof arranged to coact with working faces on adjacent sleeves or with the adjacent inner periphery of said ele-. ments; a decongealing tube connected to one of said outlet passages and extending approximately to said opening in said other member; means for locking the semi-circular elements together, through means of, their flanges, operative to form afiuidtight seal between said working surfaces when compressed; and thermostatic valve means operatively connected to said one member for controlling said decongealing tubeoutlet passage to said discharge conduitimeans.

5. A cooler for congealable liquid, comprising: intake and discharge conduit means; a pair of semi-cylindrical jacket members, one member being provided with an inlet through the outer jacket wall and two outlet passages through the jacket chamber and jacket Walls, said inlet ice-.-

ing connected to said intake conduit means, and. the other member being provided with an opening through its inner jacket wall; matching flanges on said members disposed in face to face relation, the flanges having passages therethrough in registry with the jacket chambers and in registry with each other; elastic sealing means interposed between the flanges, said sealing means being provided with passages in registry with the passages in said flanges; a stack of tubes in the space defined by said members, said tubes extending parallel to the axis of said members; individual elastic sleeves on the ends of said tubes, said sleeves having a plurality of working faces on the external periphery thereof arranged to coact with working faces on adjacent sleeves or with the adjacent inner periphery of said elements; a decongealing tube connected to one of said outlet passages and extending approximately to said opening in said other member; means for locking the semi-circular elements together, through means of their flanges, operative to form a fluidtight seal between said working surfaces when compressed; and thermostatic valve means operatively connected to said one member and interposed between said two outlet passages and said discharge conduit means for connecting said outlet passages to said discharge conduit means selectively in accordance with variations in the temperature of the liquid.

ROBERT A. RICHTER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,157,188 Smith Oct. 19, 1915 1,854,855 Nakashima Apr. 19, 1932 1,864,052 Dykeman et a1. June 21, 1932 2,376,198 Shaw May 15, 1945 FOREIGN PATENTS Number Country Date 510,810 Great Britain Aug. 9, 1939 728,7 18 France Apr. 18, 1932 

